Correct answer: Qb21.Qd4+?? 1...Bd2 2.Q:d2# but 1...Ke1! 1.Qb2! (2.Qc1#) 1...e1Q/e1B 2.Qc2# 1...e1R 2.Qc2#/Nf2# 1...e1N 2.Nf2